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 Post subject: JMM Cams
Posted: Fri Nov 17, 2006 1:54 pm 
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i was wonderin if u guys know wat the cam specs and duration for the DEV 5 JMM cam are.

 

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Posted: Fri Nov 17, 2006 2:04 pm 
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The specs have not been made public. Some people around here do know but I doubt you will find anyone who wants to post them on a forum.

 

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Posted: Fri Nov 17, 2006 2:57 pm 
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Brendan and Jim will know. If you ask them nicely, they may tell you. :wink:
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Posted: Fri Nov 17, 2006 4:21 pm 
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arm79 wrote:
Brendan and Jim will know. If you ask them nicely, they may tell you. :wink:

:lol:
Kyle tried didn't he?
Didn't get real far :P

 

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Posted: Fri Nov 17, 2006 4:25 pm 
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I asked them as well (was actually trying to buy a cam from them). I was told that "I wasnt smart enough to understand what all the numbers meant..."

anyway, more than one way to skin a cat :)

 

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Posted: Fri Nov 17, 2006 4:43 pm 
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ask wade they MIGHT know

 

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Posted: Fri Nov 17, 2006 4:47 pm 
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stockstandard wrote:
I asked them as well (was actually trying to buy a cam from them). I was told that "I wasnt smart enough to understand what all the numbers meant..."

Haha, was that senior or junior?

rushed wrote:
ask wade they MIGHT know

:lol:

No one with half a brain (or a business!) is going to tell you (on a public forum) the Dev5 specs if they know them.

 

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Posted: Fri Nov 17, 2006 4:53 pm 
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Steady ED wrote:
Haha, was that senior or junior?

That was Jim. I am sure his lack of customer service has cost him a lot of $ over the last few years. Ive chatted with Brendon on the forums a couple of times and he seems like a good bloke.

Steady ED wrote:
No one with half a brain (or a business!) is going to tell you (on a public forum) the Dev5 specs if they know them.


Exactly right. Many people think JMM are being stupid by not telling customers what they are buying, but at the end of the day if they dont want the cam specs to be known then thats their decision and most people will respect that.

 

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Posted: Fri Nov 17, 2006 5:24 pm 
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stockstandard wrote:
That was Jim. I am sure his lack of customer service has cost him a lot of $ over the last few years. Ive chatted with Brendon on the forums a couple of times and he seems like a good bloke.

Yeah Brendan is pretty good, I know the few times I've been in there he's really friendly.

Not like JMM are the only guys that keep their specs secret either :P

Without knowing the cams specs, your best bet is to speak to people that have it.
Try find someone who is impartial :wink:
The few dev5 equipped cars I've been in have been very nice, in a manual they make for a very quick car.

 

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Posted: Fri Nov 17, 2006 5:39 pm 
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they are selling the cams for 500 bucks if they are good cams why tell u the specs so you can go get a cam grinded for 100 bucks thats just dumb business really
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Posted: Fri Nov 17, 2006 5:45 pm 
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Rapier wrote:
they are selling the cams for 500 bucks if they are good cams why tell u the specs so you can go get a cam grinded for 100 bucks thats just dumb business really


Show me where you can get a cam ground to specs your provide for $100. The fact that Wade, Crow, Surecam, Tighe, RPD, etc, etc all give you specs should say something. Anybody who stands to make or save money by knowing the specs can trivially find them out anyway.

Everybody else gives specs because they help you to match a cam to an engine. JMM dont want you doing this because they want you to buy all the matching parts from them (head, exhaust etc). Its fair enough, but it does make it hard to judge how one of their cams will behave in a different engine.

 

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Posted: Fri Nov 17, 2006 6:12 pm 
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It was fine back then when jmm were the only mop who catered packages for the i6. little did they realise, ppl are getting alot smarter, 4.0L i6 aftermarket packages are poping up all over the place from people who are more then willing to help out. even disclose their specs on their web site.

secret spec my a**.

 

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Posted: Fri Nov 17, 2006 6:22 pm 
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Show me where you can get a cam ground to specs your provide for $100. The fact that Wade, Crow, Surecam, Tighe, RPD, etc, etc all give you specs should say something


take RPD off that list.

my new 977b came with a nice spec sheet, and only cost me $122.

 

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Posted: Fri Nov 17, 2006 7:46 pm 
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stockstandard wrote:
Rapier wrote:
they are selling the cams for 500 bucks if they are good cams why tell u the specs so you can go get a cam grinded for 100 bucks thats just dumb business really


Show me where you can get a cam ground to specs your provide for $100. The fact that Wade, Crow, Surecam, Tighe, RPD, etc, etc all give you specs should say something. Anybody who stands to make or save money by knowing the specs can trivially find them out anyway.

Everybody else gives specs because they help you to match a cam to an engine. JMM dont want you doing this because they want you to buy all the matching parts from them (head, exhaust etc). Its fair enough, but it does make it hard to judge how one of their cams will behave in a different engine.


They list the power output gains from their cams on their website if you want to know what sort of gain you will get from one.

They quote 146rwk with the DEV3HL package and mine made 149.2rwkw on a Tas dyno. Pretty close.

If you want to know what they are like, ask someone who has a DEV5. Mark (red ELXR6) has a DEV5 in his.
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Posted: Fri Nov 17, 2006 7:52 pm 
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downingj wrote:
They list the power output gains from their cams on their website if you want to know what sort of gain you will get from one.

They quote 146rwk with the DEV3HL package and mine made 149.2rwkw on a Tas dyno. Pretty close.

If you want to know what they are like, ask someone who has a DEV5. Mark (red ELXR6) has a DEV5 in his.

No one is disputing they make good cams downingj, you can stop defending them now :D

 

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